Explosive-engine.



No. 842,737. PATENTED JAN. 29, 1907.

' 0. WHITE & -A. R. MIDDLETON.

EXPLOSIVE ENGINE. APPLICATION FILED JUNE 22, 1904. RENEWED Nov.2 s, 1906.

No. 842,737. PATENTED JAN. 29, 1907. v

0. WHITE & A. R. MIDDLETON.

BXPLOSIVE ENGINE. v APPLICATION FILED JUNE 22, 1904. RENEWED NOV.23, 1906.

2 SHEETS- SHEET 2.

I CHA'RLES "41/75 QRTHU/P ffiM/aauro/v Wfm z g g m UNITED STATES PATENTOFFIGE.

- CHARLES WHITE AND ARTHUR MIDDLETON, OF BALTIMORE, MARYLAND.

- means for controlling the feed EXPLOSlVE-ENGINE To all whom, it may concern:

Be it known that we, CHARLES WHITE and ARTHUR R. MIDDLETON, citizens of the United States, residing at Baltimore, Maryland, have invented certain new and useful Improvements in Explosive-Engines, of which the following is a specification.

. Our invention concerns more articularly f fuel to the engine.

Explosive-engines are governed by cutting off the supply of fuelto the combustion-chamber for the required period, the governor the combustion-chamber.

mechanism being adapted'and arranged to out off the supply when required in order to reduce the speed and to maintain a regular and uniform supply while the engine is moving (ilinder' normal conditions of load and s ee 4 With explosive-engines'using gasolene for fuel serious difiiculty isrexperienced by reason of the'necessary irregularity of the feed of the fuel produced by the governor in meeting the different conditions, such difliculty being due to the volatile nature of the fuel and to the altered conditions in the combustion-chain.- ber arising from the cutting ofl of this combustible fluid for one or more strokes, allowing the conditions of temperature. and moisture within the explosion-chamber to become abnormal. Y

In our engine, while we employ the method of governing consisting of cutting off the supply of fuel for the required period, we vary the charges as to the proportion of gasolene so as to make up for the changed conditions Within We do this by holding the induction-valve closed during the time that the fuel-supply is ordinarily cut off and by feedin' in rear of said closed valve a small initial 0 arge of fuel ,which upon'the next opening of the valve passes into the combustion-chamber with the next main charge allowed by the governor, so that this main charge, which is the first one supplied after cutting ofl is in excess in volume to that which is supplied while the engine is runnin normally and charges are regularly supplied thereto. This excess or initial charge compensates for the changed conditions in the' explosion-chamber arising from the Want of' charges fed thereto with regularity.

The invention consistsin he features and combination and arrangement of] arts hereinafter described, and particular y pointed out in the claims. 1 i

Specification of Letters Patent. I Application filed June 22,1904". Renewed November 28.1906. 8eria1No.34 4.'786.

. patented Jan. 29, 1907.

side elevationof the gasolene-engine Withour view of the pump for the gasolene. Fig. 3 is the head of the cylinder wlththe valve mechanism carried thereby. 1 K

In the drawings the cylinder .1 is'fof sub cylinder an air-pipe 2 extends, connecting engine, the said port I being'controlled by an in thus supp the liquid-fuel tothe port-4' and inlet-valve 6.

a rod 10 extending outsideofthe piston-casing and operated by anarm 1 1 on a governorrod 12, extending alon side of the engine 15'is' arranged on'the piston-rod to hol the piston in retracted position. Qheck-valves 16 and 17 are arranged, respect1vely,.in the said check-valves cooperating with the pump -The rod 12- is arranged in a manner and per 545,995, September 5, 1895, in that the said alongside of the cylinder and through a por-,-

standard 21 on the rear end' of the cylinder, the said lever at its 0 posite endbearing der tension of a spring 25, tending constantly to seat the said valve.

26, movable in a casing27, supported on any rying a roller 28, operated by a'cam 29 on a In the accompanying drawings, Figure lis a I a detail view of governor mechanism; and I Fig. 4 is a detail plan view, partly in section, of e l lhe pump'comprisesa pistonQ, which has improvements attached. Fig. 2 is a detailed 6o stantially' ordinary construction, and tothis witha box 3, which is connected throughthe port 4 with the combustion-chamber 5 of thenotion-valve .6; Gasolene is'supplie'd to the engine from a suitable reservoir through a pipe 7, leading to a pump 8, said pump connectingwiththe box 3, before mentioned,'and v from the governor mec anism," as will be J hereinafter described." The arm 11 has a 'ff' set-screw 1 3 adjustably. held therein to bear on a nut 14 on'the piston-rod 10. A s ring,

pipe leading tothe pump and in the nozzle 18, extending from the pump into the'bo 3 g in upplying'theliquidfuel to the engine r.

forms functions similar to'those described our Letters Patent ofthe United States No.

tion of the cylinder-head at 1 9,[ its rear end bearing against alever 20, pivoted to the I rod' extends from the governor mechamsm gine. .The slide 26 carries a stop 34, said stop being held thereto adjustably by a screw 35, and a set-screw 36 with a jam-nut 37 also forming part of the means for adjusting the stop. This step is adapted to strike a governor-detent 38, pivoted to the casing 27 or to any other suitable stationary part at 39, the said detent being connected by a link 40 and a lever 41, pivoted at 42 to a sleeve 43 of the governor mechanism 44, which sleeve is adapted to be moved vertically, and thus raise and lower the detent into and out of the path of the stop 34 on the slide 26. The arrangement is such that when the speed of the engine increases the cut-off takes place by the overnor operating to depress the end of the etent 38 into line with the stop 34, so that the said stop will arrest the movement of'the slide 26 and rod 12 to the right in Figs. 1, 3, and 4, and thus the cam 29 in its revolution will not operate the rod 12, and conserauently the pump will not be actuated an the supply of fuel will be cut off. The rod 12, it will be understood, ispressed constantly toward the right by a spring 45, Fig.

4, bearing against a collar 46 thereon. As

soon as the speed of the engine lowers to normal the governordetent 38 will be raised, and the sprin will then move the rod 12, so that the rol er 28 on the slide will again be brought into the range of action of the cam 29, and said cam will, together with the spring 45', reciprocate the rod 12, and conse uently the pump willbe'operated and the fuel will be supplied to the engine.

As before stated, in the use of asolene as a fuel when the cut-off of the fue takes place and the engine runs without fuel being supplied thereto the conditions in the combustion-chamber are changed, the supplemental exhaust-valve bein at this time open, as shown in Fig. 4, an the combustion-chamher being cleared of the exhaust products. By reason of the changed conditions within the combustion-chamber we have found it necessary to compensate therefor bysupplying an excess of fuel in the first charge, which ,is fed to the engine upon resuming the fuelfeeding actions. In? order to accomplish this, we provide means for holding the inlet-- valve closed during the'cut-otf period, and

' we su ly to thes ace or port immediatel PP P 3 in rear of'this valve a small initial charge of fuel, which is regulated in quantity to corres end to the period of cut-off-that is to say, if the cut-off period is short the initialor excess char e is small,, whereas if the cut-off period is fong the initial or excess charge larger. For" holding the inlet-valve closed when the supplemental exhaust-valve is open during the cut-off period we provide an arm 47, connected with the. rod 12 and hav-' ingits f'reeend' bearing uponacollar at48 on the stem 49; of the said inlet-valve, which keep the inlet-valve closed. The arm 47 is of flexible material, and it is so arranged that when the inlet-valve is closed, as shown in Fig. 4, the said arm is under tension and the re -12 may have a slight reciprocatory movement without afiecting the holding action of the said flexible arm upon the inlet-valve 6 that is to'say, the arm 47 will maintain the inlet-valve closed, while at the same time the rod 12 may have slight reciprocatory movement, and thisreciprocation of the rod 12 will operate the ga'solene-pump to a small degree, and fuel will therefore be fed to the space or port in rear of the closed inle t-valve. In order to secure this feeding action, it is simply necessary to adjust the stop 34 in rethe fuel this excess or initial small charge will add itself to the main charge which is first let in after the cut-off period, so that the said excess charge will be'sufficient to compensate for the dryin out and other changed conditions which have taken place in the cprfiibustion-chamber during the cut-off pe- 1'10 I It will be seenfrom the above that by utilizing an arm 47 of a flexible character a simple andeffective construction is provided, and the same rod 12 which operates the pump and the supplemental exhaust is utilized for operating the flexible arm and keeping the inlet-valve closed. While we prefer this arrangement, we do not wish to be limited in this respect. The arm 47, besides serving to hold the inlet-valve closed, also by reason of its flexibility serves to cushion the action of the inlet-valve and relieves the spring 50ofshock. It also serves to cushion the closing movement of the valve.

We claim 1. In combination, inan explosive-engine, a cylinder valve mechanism, and means including a governor for feeding an excess charge of fuel to the combustion-chamber after the cut-off period has terminated, sub-- an exhaust-valve at the rear end of the combustion-chamber, an inlet-valve, means for charge of fuel prior to the feeding of the main charge, substantially as described.

A; In combination, in an explosiveen'gine, an inlet-valve, a governor-rod, a fuel-supplying device operated'by the said rod and a yielding connection between the said rod and the said inlet-valve arranged to keep the said valve closed while the rod reciprocates to feed the fuel, substantially as described.

5 In combination, in an explosive-engine, an inlet-valve for the fuel, a fuel-supplying device, a rod for operating the said device, and a flexible arm connecting the said rod with the inlet-valve to hold the said valve closed while the rod operates the fuel-supplying device.

6. In combination, in an explosive-engine,

an inlet for the fuel, an exhaust-valve,- anintermediately-pivoted lever for operating tlie exhaust-valve by bearing at one on,' a governor-rod hearing at the other end of the lever to operate the same, and an'arm extending from the said rod to hold the inletvalve closed while the exhaust-valve is open, substantially as described.

7. In combination, in an explosive-engine,

an inlet-valve for the fuel, an exhaust-valve, a lever for operating the exhaust-valve, a governor-rod for operating the lever, fuelend there-- supplying means operated from the said rod and yielding means connecting the said rod with the inlet-valve to hold the same closed while the rod operates the fuel-supplying means, substantially as described.

8. In combination, in an explosive-engine, an inlet-valvefor the fuel, a fuel-supply device, means for operating the said device comprising a slide having a stop, a cam for operating the slide, and a detent for enga ing the stop, having clearance therewith to aIlow movement of the slide when the governor cuts off, substantially as described.

3 9. In combination, in an explosive-engine, an inlet-valve for the fuel, an exhaust-valve,

a fuel-supplying device, a rod for operating the same, a lever operated by the said rod and controlling the exhaust-valve, a flexible arm connecting the said rod with the inletvalve, a cam for operating the rod, a stop associated with therod, and a governor-detent for controlling the stop, said detent having clearance between itself and the stop to allow the rod to be operated by thecam partially when the cut-ofi takes place, substan.

tially as described.

In testimony whereof we afiiX our signatures in presence of two witnesses.

CHARLES WHITE. ARTHUR R. MIDDLETON.

Witnesses MURRAY HANSON, S. E. ISWEENY. 

